27 CFR § 53.91 - Charges to be included in sale price.
(a) In general. The “price” for which an article is sold includes the total consideration paid for the article, whether that consideration is in the form of money, services, or other things. However, for purposes of the taxes imposed under chapter 32 of the Code, certain collateral charges made in connection with the sale of a taxable article must be included in the taxable sale price, whereas others may be excluded. Any charge which is required by a manufacturer, producer, or importer to be paid as a condition of its sale of a taxable article and which is not attributable to an expense falling within one of the exclusions provided in section 4216 of the Code or the regulations thereunder is includable in the taxable sale price. It is immaterial for this purpose that the charge may be paid to a person other than the manufacturer, producer, or importer, or that it may be separately billed to the purchaser as a charge earmarked for expenses incurred or to be incurred in his behalf, such as charges for demonstration or display of the article, for sales promotion programs, or otherwise. With respect to the rules relating to exclusion of charges for local advertising of a manufacturer's products, see section 4216(e) of the Code and § 53.100. In the case of sales on credit, a carrying, finance, or service charge is excludable from the sale price if it is reasonably related to the costs of carrying the deferred portion of the sale price (such as interest on the deferred portion of the sale price, expenses of bookkeeping necessary to keep the records of such sales, and expenses of correspondence and other communication in connection with collection).
(b) Tools and dies. Separate charges for tools and dies used in the manufacture or production of a taxable article are to be included, in whole or in part, in the sale price on which the tax is based. It is immaterial whether the charges for such items are billed in a lump sum or are amortized or allocated to each of the taxable articles. If, at the termination of a contract to manufacture taxable articles, the tools and dies used in production pass to the purchaser, only the amount of depreciation of the tools and dies incurred in production, computed on a “production output” basis, should be included in the sale price. If the purchaser furnishes the tools and dies, the amount of the cost thereof, to the extent that such cost has been depreciated in the production of the taxable articles (computed on a “production output” basis), shall be included in determining the sale price of the articles for purposes of computing the tax.
(c) Charges for warranty. A charge for a warranty of an article which the manufacturer, producer, or importer requires the purchaser to pay in order to obtain the article shall be included in the sale price of the article on which the tax is computed. On the other hand, a charge for a warranty of a taxable article paid at the purchaser's option shall not be included in the sale price for purposes of computing tax thereon.
(d) Charges for coverings, containers, and packing. Any charge by the manufacturer, producer, or importer for coverings and containers of whatever nature used to pack an article for shipment shall be included as part of the sale price for the purpose of computing the tax, whether or not the charges are identified as such on the invoice or are billed separately. Even though there is an agreement that the manufacturer, producer, or importer will repay all or a portion of the charge for the coverings or containers upon the return thereof, the full charge nevertheless shall be included in the sale price. It is immaterial whether the charge made at the time of sale is more or less than the actual value of the covering or container. See § 53.173(b)(4) for provisions relating to the claiming of a credit or refund in the case of a price readjustment due to the return or repossession of a covering or container. Packing charges are to be included in the sale price whether the charges cover normal packing or special packing services, such as for extra protection of the article or for odd-lot quantities. This rule shall apply whether the packing services are initiated by the manufacturer, producer, or importer or are furnished at the request of the purchaser and whether the packing is performed by the manufacturer, producer, or importer or by another person at his request. If the purchaser supplies packing materials, the fair market value of such materials must be included in the tax base when computing tax liability on the sale of the article.
(e) Taxable and nontaxable articles sold as a unit. Where a taxable article and a nontaxable article are sold by the manufacturer as a unit, the tax attaches to that portion of the manufacturer's sale price of the unit which is properly allocable to the taxable article. Normally, the taxable portion of such a unit may be determined by applying to the manufacturer's sale price of the unit the ratio which the manufacturer's separate sale price of the taxable article bears to the sum of the sale prices of both the taxable and nontaxable articles, if such articles are sold separately by the manufacturer. Where the articles (or either one of them) are not sold separately by the manufacturer and do not have established sale prices, the taxable portion is to be determined from a comparison of the actual costs of the articles to the manufacturer. Thus, if the cost of the taxable article represents four-fifths of the total cost of the complete unit, the tax applies to four-fifths of the price charged by the manufacturer for the unit.